1. There will be total 30 MCQ in this test. 2. Please keep a pen and paper ready for rough work but keep your books away. 3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number. 4. No negative marking for incorrect choice. 5. Please click on “Finish the Test” when you want to exit. 6. All the best – Happy Studying

1. The magnification of a convex mirror is always:

Less than 1

Equal to 1

Infinity

More than 1

Question 1 of 30

2. Which among the following is not true for a plane mirror?

Lateral inversion always takes place in a plane mirror

Image is always formed at infinity

Image formed is always erect

Image formed by a plane mirror is always virtual

Question 2 of 30

3. When the image is of the same size as the object, the magnification is

Equal to one

Zero

Smaller than one

Greater than one

Question 3 of 30

4. The name and radius of curvature of a spherical mirror whose focal length is +2 cm is

+4 cm; concave

-4 cm; convex

-4 cm ; Concave

+4 cm; Convex

Question 4 of 30

5. No refraction occurs when light goes from

rarer to denser medium

one medium to other medium of same colour.

one medium to other medium of same refractive index.

denser to rarer medium.

Question 5 of 30

6. An object is situated at a distance of f/2 from a convex lens of focal length f. Distance of image will be

-(f/2)

-f

+(f/4)

+(f/3)

Question 6 of 30

7. After reflection through a concave mirror, rays of light

Meet

Appear to meet

Never meet

None of the above

Question 7 of 30

8. Virtual image forms

When rays of light actually meet.

When rays of light do not actually meet, but appear to meet when produced backwards.

When rays of light meet on the back side of mirror.

When rays of light converge.

Question 8 of 30

9. Which lens always forms a virtual image?

Concave lens

Convex lens

Converging lens

Both convex and concave

Question 9 of 30

10. What will happen when a ray enters from glass to air medium?

Totally reflected from air surface.

Follows its original path.

It bends towards the normal.

It bends away from normal

Question 10 of 30

11. If the magnification has a negative sign, the image formed by the concave mirror must be

Real and inverted

Virtual and inverted

Virtual and erect

Real and erect

Question 11 of 30

12. An object 4 cm tall is placed in front of a convex lens. It produces an image 3 cm tall. What is the magnification of the lens?

0.75

1.33

12

Question 12 of 30

13. Two thin lenses of power +3.5 D and -2.5 D are placed in contact. Find the focal length of the lens combination.

16.7 m

1 cm

-16.7 m

100 cm

Question 13 of 30

14. The maximum image distance in case of a concave lens of focal length ‘f’ is :

4f

f

3f

2f

Question 14 of 30

15. The objective lens of microscope use

Convex mirror

Concave lens

Concave mirror

Convex lens

Question 15 of 30

16. Rahul is standing in front of a plane mirror. The distance between Rahul and his image is 150cm. If Rahul’s distance from the mirror is x. What could be the possible value of x?

x = 50 cm

x = 25cm

x = 75m

x = 100cm

Question 16 of 30

17. The mirror used as rear view mirror is

Concave

Plano concave

Plano convex

Convex

Question 17 of 30

18. Which one of the following materials cannot be used to make lens?

Water

Glass

Clay

Plastic

Question 18 of 30

19. If a lens has a focal length, f = -12 cm. then it is a

Convex lens

Convex lens

Can be convex or concave

Concave lens

Question 19 of 30

20. In a convex lens, where is the image formed, when an object is placed at 2F?

At 2F on the same side

Between F and 2F

At focus (F)

At 2F on the other side

Question 20 of 30

21. If the radius of curvature of a spherical mirror is 34.52 cm, then the focal length of that spherical mirror is